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Q#1 Frequency Domain Analysis GATE EE 2001 MSQ +2 marks -0 marks

A unit feedback system has an open-loop transfer function of                 

 

(a) Determine the magnitude of G(jω) in dB at an angular frequency of ω= 20 rad/sec.

(b) Determine the phase margin in degrees.

(c) Determine the gain margin in dB.

(d) Is the system stable or unstable?

(a)  M = 0 dB

(b) Phase margin = 216.86°

(c) Gain Margin = –13.98 dB

(d) System is unstable

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